1 /* $FreeBSD: src/sys/netinet/icmp6.h,v 1.2.2.5 2002/06/29 18:31:11 ume Exp $ */ 2 /* $DragonFly: src/sys/netinet/icmp6.h,v 1.8 2008/09/04 09:08:22 hasso Exp $ */ 3 /* $KAME: icmp6.h,v 1.46 2001/04/27 15:09:48 itojun Exp $ */ 4 5 /* 6 * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. 7 * All rights reserved. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 1. Redistributions of source code must retain the above copyright 13 * notice, this list of conditions and the following disclaimer. 14 * 2. Redistributions in binary form must reproduce the above copyright 15 * notice, this list of conditions and the following disclaimer in the 16 * documentation and/or other materials provided with the distribution. 17 * 3. Neither the name of the project nor the names of its contributors 18 * may be used to endorse or promote products derived from this software 19 * without specific prior written permission. 20 * 21 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND 22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 24 * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE 25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31 * SUCH DAMAGE. 32 */ 33 34 /* 35 * Copyright (c) 1982, 1986, 1993 36 * The Regents of the University of California. All rights reserved. 37 * 38 * Redistribution and use in source and binary forms, with or without 39 * modification, are permitted provided that the following conditions 40 * are met: 41 * 1. Redistributions of source code must retain the above copyright 42 * notice, this list of conditions and the following disclaimer. 43 * 2. Redistributions in binary form must reproduce the above copyright 44 * notice, this list of conditions and the following disclaimer in the 45 * documentation and/or other materials provided with the distribution. 46 * 3. All advertising materials mentioning features or use of this software 47 * must display the following acknowledgement: 48 * This product includes software developed by the University of 49 * California, Berkeley and its contributors. 50 * 4. Neither the name of the University nor the names of its contributors 51 * may be used to endorse or promote products derived from this software 52 * without specific prior written permission. 53 * 54 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 55 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 56 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 57 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 58 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 59 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 60 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 61 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 62 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 63 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 64 * SUCH DAMAGE. 65 * 66 * @(#)ip_icmp.h 8.1 (Berkeley) 6/10/93 67 */ 68 69 #ifndef _NETINET_ICMP6_H_ 70 #define _NETINET_ICMP6_H_ 71 72 #ifndef _SYS_TYPES_H_ 73 #include <sys/types.h> 74 #endif 75 #ifndef _NETINET6_IN6_H_ 76 #include <netinet/in.h> 77 #endif 78 #ifndef _MACHINE_ENDIAN_H_ 79 #include <machine/endian.h> 80 #endif 81 82 #define ICMPV6_PLD_MAXLEN 1232 /* IPV6_MMTU - sizeof(struct ip6_hdr) 83 - sizeof(struct icmp6_hdr) */ 84 85 struct icmp6_hdr { 86 u_int8_t icmp6_type; /* type field */ 87 u_int8_t icmp6_code; /* code field */ 88 u_int16_t icmp6_cksum; /* checksum field */ 89 union { 90 u_int32_t icmp6_un_data32[1]; /* type-specific field */ 91 u_int16_t icmp6_un_data16[2]; /* type-specific field */ 92 u_int8_t icmp6_un_data8[4]; /* type-specific field */ 93 } icmp6_dataun; 94 } __attribute__((__packed__)); 95 96 #define icmp6_data32 icmp6_dataun.icmp6_un_data32 97 #define icmp6_data16 icmp6_dataun.icmp6_un_data16 98 #define icmp6_data8 icmp6_dataun.icmp6_un_data8 99 #define icmp6_pptr icmp6_data32[0] /* parameter prob */ 100 #define icmp6_mtu icmp6_data32[0] /* packet too big */ 101 #define icmp6_id icmp6_data16[0] /* echo request/reply */ 102 #define icmp6_seq icmp6_data16[1] /* echo request/reply */ 103 #define icmp6_maxdelay icmp6_data16[0] /* mcast group membership */ 104 105 #define ICMP6_DST_UNREACH 1 /* dest unreachable, codes: */ 106 #define ICMP6_PACKET_TOO_BIG 2 /* packet too big */ 107 #define ICMP6_TIME_EXCEEDED 3 /* time exceeded, code: */ 108 #define ICMP6_PARAM_PROB 4 /* ip6 header bad */ 109 110 #define ICMP6_ECHO_REQUEST 128 /* echo service */ 111 #define ICMP6_ECHO_REPLY 129 /* echo reply */ 112 #define ICMP6_MEMBERSHIP_QUERY 130 /* group membership query */ 113 #define MLD_LISTENER_QUERY 130 /* multicast listener query */ 114 #define ICMP6_MEMBERSHIP_REPORT 131 /* group membership report */ 115 #define MLD_LISTENER_REPORT 131 /* multicast listener report */ 116 #define ICMP6_MEMBERSHIP_REDUCTION 132 /* group membership termination */ 117 #define MLD_LISTENER_DONE 132 /* multicast listener done */ 118 #define MLD_LISTENER_REDUCTION MLD_LISTENER_DONE /* defined in RFC3542 */ 119 120 #ifndef _KERNEL 121 /* the followings are for backward compatibility to old KAME apps. */ 122 #define MLD6_LISTENER_QUERY MLD_LISTENER_QUERY 123 #define MLD6_LISTENER_REPORT MLD_LISTENER_REPORT 124 #define MLD6_LISTENER_DONE MLD_LISTENER_DONE 125 #endif 126 127 #define ND_ROUTER_SOLICIT 133 /* router solicitation */ 128 #define ND_ROUTER_ADVERT 134 /* router advertisment */ 129 #define ND_NEIGHBOR_SOLICIT 135 /* neighbor solicitation */ 130 #define ND_NEIGHBOR_ADVERT 136 /* neighbor advertisment */ 131 #define ND_REDIRECT 137 /* redirect */ 132 133 #define ICMP6_ROUTER_RENUMBERING 138 /* router renumbering */ 134 135 #define ICMP6_WRUREQUEST 139 /* who are you request */ 136 #define ICMP6_WRUREPLY 140 /* who are you reply */ 137 #define ICMP6_FQDN_QUERY 139 /* FQDN query */ 138 #define ICMP6_FQDN_REPLY 140 /* FQDN reply */ 139 #define ICMP6_NI_QUERY 139 /* node information request */ 140 #define ICMP6_NI_REPLY 140 /* node information reply */ 141 142 /* The definitions below are experimental. TBA */ 143 #define MLD_MTRACE_RESP 200 /* mtrace resp (to sender) */ 144 #define MLD_MTRACE 201 /* mtrace messages */ 145 146 #define ICMP6_HADISCOV_REQUEST 202 /* XXX To be defined */ 147 #define ICMP6_HADISCOV_REPLY 203 /* XXX To be defined */ 148 149 #ifndef _KERNEL 150 #define MLD6_MTRACE_RESP MLD_MTRACE_RESP 151 #define MLD6_MTRACE MLD_MTRACE 152 #endif 153 154 #define ICMP6_MAXTYPE 203 155 156 #define ICMP6_DST_UNREACH_NOROUTE 0 /* no route to destination */ 157 #define ICMP6_DST_UNREACH_ADMIN 1 /* administratively prohibited */ 158 #define ICMP6_DST_UNREACH_NOTNEIGHBOR 2 /* not a neighbor(obsolete) */ 159 #define ICMP6_DST_UNREACH_BEYONDSCOPE 2 /* beyond scope of source address */ 160 #define ICMP6_DST_UNREACH_ADDR 3 /* address unreachable */ 161 #define ICMP6_DST_UNREACH_NOPORT 4 /* port unreachable */ 162 163 #define ICMP6_TIME_EXCEED_TRANSIT 0 /* ttl==0 in transit */ 164 #define ICMP6_TIME_EXCEED_REASSEMBLY 1 /* ttl==0 in reass */ 165 166 #define ICMP6_PARAMPROB_HEADER 0 /* erroneous header field */ 167 #define ICMP6_PARAMPROB_NEXTHEADER 1 /* unrecognized next header */ 168 #define ICMP6_PARAMPROB_OPTION 2 /* unrecognized option */ 169 170 #define ICMP6_INFOMSG_MASK 0x80 /* all informational messages */ 171 172 #define ICMP6_NI_SUBJ_IPV6 0 /* Query Subject is an IPv6 address */ 173 #define ICMP6_NI_SUBJ_FQDN 1 /* Query Subject is a Domain name */ 174 #define ICMP6_NI_SUBJ_IPV4 2 /* Query Subject is an IPv4 address */ 175 176 #define ICMP6_NI_SUCCESS 0 /* node information successful reply */ 177 #define ICMP6_NI_REFUSED 1 /* node information request is refused */ 178 #define ICMP6_NI_UNKNOWN 2 /* unknown Qtype */ 179 180 #define ICMP6_ROUTER_RENUMBERING_COMMAND 0 /* rr command */ 181 #define ICMP6_ROUTER_RENUMBERING_RESULT 1 /* rr result */ 182 #define ICMP6_ROUTER_RENUMBERING_SEQNUM_RESET 255 /* rr seq num reset */ 183 184 /* Used in kernel only */ 185 #define ND_REDIRECT_ONLINK 0 /* redirect to an on-link node */ 186 #define ND_REDIRECT_ROUTER 1 /* redirect to a better router */ 187 188 /* 189 * Multicast Listener Discovery 190 */ 191 struct mld_hdr { 192 struct icmp6_hdr mld_icmp6_hdr; 193 struct in6_addr mld_addr; /* multicast address */ 194 } __attribute__((__packed__)); 195 196 /* definitions to provide backward compatibility to old KAME applications */ 197 #ifndef _KERNEL 198 #define mld6_hdr mld_hdr 199 #define mld6_type mld_type 200 #define mld6_code mld_code 201 #define mld6_cksum mld_cksum 202 #define mld6_maxdelay mld_maxdelay 203 #define mld6_reserved mld_reserved 204 #define mld6_addr mld_addr 205 #endif 206 207 /* shortcut macro definitions */ 208 #define mld_type mld_icmp6_hdr.icmp6_type 209 #define mld_code mld_icmp6_hdr.icmp6_code 210 #define mld_cksum mld_icmp6_hdr.icmp6_cksum 211 #define mld_maxdelay mld_icmp6_hdr.icmp6_data16[0] 212 #define mld_reserved mld_icmp6_hdr.icmp6_data16[1] 213 214 /* 215 * Neighbor Discovery 216 */ 217 218 struct nd_router_solicit { /* router solicitation */ 219 struct icmp6_hdr nd_rs_hdr; 220 /* could be followed by options */ 221 } __attribute__((__packed__)); 222 223 #define nd_rs_type nd_rs_hdr.icmp6_type 224 #define nd_rs_code nd_rs_hdr.icmp6_code 225 #define nd_rs_cksum nd_rs_hdr.icmp6_cksum 226 #define nd_rs_reserved nd_rs_hdr.icmp6_data32[0] 227 228 struct nd_router_advert { /* router advertisement */ 229 struct icmp6_hdr nd_ra_hdr; 230 u_int32_t nd_ra_reachable; /* reachable time */ 231 u_int32_t nd_ra_retransmit; /* retransmit timer */ 232 /* could be followed by options */ 233 } __attribute__((__packed__)); 234 235 #define nd_ra_type nd_ra_hdr.icmp6_type 236 #define nd_ra_code nd_ra_hdr.icmp6_code 237 #define nd_ra_cksum nd_ra_hdr.icmp6_cksum 238 #define nd_ra_curhoplimit nd_ra_hdr.icmp6_data8[0] 239 #define nd_ra_flags_reserved nd_ra_hdr.icmp6_data8[1] 240 #define ND_RA_FLAG_MANAGED 0x80 241 #define ND_RA_FLAG_OTHER 0x40 242 #define ND_RA_FLAG_HA 0x20 243 244 /* 245 * Router preference values based on draft-draves-ipngwg-router-selection-01. 246 * These are non-standard definitions. 247 */ 248 #define ND_RA_FLAG_RTPREF_MASK 0x18 /* 00011000 */ 249 250 #define ND_RA_FLAG_RTPREF_HIGH 0x08 /* 00001000 */ 251 #define ND_RA_FLAG_RTPREF_MEDIUM 0x00 /* 00000000 */ 252 #define ND_RA_FLAG_RTPREF_LOW 0x18 /* 00011000 */ 253 #define ND_RA_FLAG_RTPREF_RSV 0x10 /* 00010000 */ 254 255 #define nd_ra_router_lifetime nd_ra_hdr.icmp6_data16[1] 256 257 struct nd_neighbor_solicit { /* neighbor solicitation */ 258 struct icmp6_hdr nd_ns_hdr; 259 struct in6_addr nd_ns_target; /*target address */ 260 /* could be followed by options */ 261 } __attribute__((__packed__)); 262 263 #define nd_ns_type nd_ns_hdr.icmp6_type 264 #define nd_ns_code nd_ns_hdr.icmp6_code 265 #define nd_ns_cksum nd_ns_hdr.icmp6_cksum 266 #define nd_ns_reserved nd_ns_hdr.icmp6_data32[0] 267 268 struct nd_neighbor_advert { /* neighbor advertisement */ 269 struct icmp6_hdr nd_na_hdr; 270 struct in6_addr nd_na_target; /* target address */ 271 /* could be followed by options */ 272 } __attribute__((__packed__)); 273 274 #define nd_na_type nd_na_hdr.icmp6_type 275 #define nd_na_code nd_na_hdr.icmp6_code 276 #define nd_na_cksum nd_na_hdr.icmp6_cksum 277 #define nd_na_flags_reserved nd_na_hdr.icmp6_data32[0] 278 #if _BYTE_ORDER == _BIG_ENDIAN 279 #define ND_NA_FLAG_ROUTER 0x80000000 280 #define ND_NA_FLAG_SOLICITED 0x40000000 281 #define ND_NA_FLAG_OVERRIDE 0x20000000 282 #elif _BYTE_ORDER == _LITTLE_ENDIAN 283 #define ND_NA_FLAG_ROUTER 0x80 284 #define ND_NA_FLAG_SOLICITED 0x40 285 #define ND_NA_FLAG_OVERRIDE 0x20 286 #else 287 #error "Byte order not implemented" 288 #endif 289 290 struct nd_redirect { /* redirect */ 291 struct icmp6_hdr nd_rd_hdr; 292 struct in6_addr nd_rd_target; /* target address */ 293 struct in6_addr nd_rd_dst; /* destination address */ 294 /* could be followed by options */ 295 } __attribute__((__packed__)); 296 297 #define nd_rd_type nd_rd_hdr.icmp6_type 298 #define nd_rd_code nd_rd_hdr.icmp6_code 299 #define nd_rd_cksum nd_rd_hdr.icmp6_cksum 300 #define nd_rd_reserved nd_rd_hdr.icmp6_data32[0] 301 302 struct nd_opt_hdr { /* Neighbor discovery option header */ 303 u_int8_t nd_opt_type; 304 u_int8_t nd_opt_len; 305 /* followed by option specific data*/ 306 } __attribute__((__packed__)); 307 308 #define ND_OPT_SOURCE_LINKADDR 1 309 #define ND_OPT_TARGET_LINKADDR 2 310 #define ND_OPT_PREFIX_INFORMATION 3 311 #define ND_OPT_REDIRECTED_HEADER 4 312 #define ND_OPT_MTU 5 313 314 #define ND_OPT_ROUTE_INFO 200 /* draft-ietf-ipngwg-router-preference, not officially assigned yet */ 315 316 struct nd_opt_prefix_info { /* prefix information */ 317 u_int8_t nd_opt_pi_type; 318 u_int8_t nd_opt_pi_len; 319 u_int8_t nd_opt_pi_prefix_len; 320 u_int8_t nd_opt_pi_flags_reserved; 321 u_int32_t nd_opt_pi_valid_time; 322 u_int32_t nd_opt_pi_preferred_time; 323 u_int32_t nd_opt_pi_reserved2; 324 struct in6_addr nd_opt_pi_prefix; 325 } __attribute__((__packed__)); 326 327 #define ND_OPT_PI_FLAG_ONLINK 0x80 328 #define ND_OPT_PI_FLAG_AUTO 0x40 329 330 struct nd_opt_rd_hdr { /* redirected header */ 331 u_int8_t nd_opt_rh_type; 332 u_int8_t nd_opt_rh_len; 333 u_int16_t nd_opt_rh_reserved1; 334 u_int32_t nd_opt_rh_reserved2; 335 /* followed by IP header and data */ 336 } __attribute__((__packed__)); 337 338 struct nd_opt_mtu { /* MTU option */ 339 u_int8_t nd_opt_mtu_type; 340 u_int8_t nd_opt_mtu_len; 341 u_int16_t nd_opt_mtu_reserved; 342 u_int32_t nd_opt_mtu_mtu; 343 } __attribute__((__packed__)); 344 345 struct nd_opt_route_info { /* route info */ 346 u_int8_t nd_opt_rti_type; 347 u_int8_t nd_opt_rti_len; 348 u_int8_t nd_opt_rti_prefixlen; 349 u_int8_t nd_opt_rti_flags; 350 u_int32_t nd_opt_rti_lifetime; 351 /* prefix follows */ 352 } __attribute__((__packed__)); 353 354 /* 355 * icmp6 namelookup 356 */ 357 358 struct icmp6_namelookup { 359 struct icmp6_hdr icmp6_nl_hdr; 360 u_int8_t icmp6_nl_nonce[8]; 361 int32_t icmp6_nl_ttl; 362 #if 0 363 u_int8_t icmp6_nl_len; 364 u_int8_t icmp6_nl_name[3]; 365 #endif 366 /* could be followed by options */ 367 } __attribute__((__packed__)); 368 369 /* 370 * icmp6 node information 371 */ 372 struct icmp6_nodeinfo { 373 struct icmp6_hdr icmp6_ni_hdr; 374 u_int8_t icmp6_ni_nonce[8]; 375 /* could be followed by reply data */ 376 } __attribute__((__packed__)); 377 378 #define ni_type icmp6_ni_hdr.icmp6_type 379 #define ni_code icmp6_ni_hdr.icmp6_code 380 #define ni_cksum icmp6_ni_hdr.icmp6_cksum 381 #define ni_qtype icmp6_ni_hdr.icmp6_data16[0] 382 #define ni_flags icmp6_ni_hdr.icmp6_data16[1] 383 384 #define NI_QTYPE_NOOP 0 /* NOOP */ 385 #define NI_QTYPE_SUPTYPES 1 /* Supported Qtypes */ 386 #define NI_QTYPE_FQDN 2 /* FQDN (draft 04) */ 387 #define NI_QTYPE_DNSNAME 2 /* DNS Name */ 388 #define NI_QTYPE_NODEADDR 3 /* Node Addresses */ 389 #define NI_QTYPE_IPV4ADDR 4 /* IPv4 Addresses */ 390 391 #if _BYTE_ORDER == _BIG_ENDIAN 392 #define NI_SUPTYPE_FLAG_COMPRESS 0x1 393 #define NI_FQDN_FLAG_VALIDTTL 0x1 394 #elif _BYTE_ORDER == _LITTLE_ENDIAN 395 #define NI_SUPTYPE_FLAG_COMPRESS 0x0100 396 #define NI_FQDN_FLAG_VALIDTTL 0x0100 397 #else 398 #error "Byte order not implemented" 399 #endif 400 401 #ifdef NAME_LOOKUPS_04 402 #if _BYTE_ORDER == _BIG_ENDIAN 403 #define NI_NODEADDR_FLAG_LINKLOCAL 0x1 404 #define NI_NODEADDR_FLAG_SITELOCAL 0x2 405 #define NI_NODEADDR_FLAG_GLOBAL 0x4 406 #define NI_NODEADDR_FLAG_ALL 0x8 407 #define NI_NODEADDR_FLAG_TRUNCATE 0x10 408 #define NI_NODEADDR_FLAG_ANYCAST 0x20 /* just experimental. not in spec */ 409 #elif _BYTE_ORDER == _LITTLE_ENDIAN 410 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0100 411 #define NI_NODEADDR_FLAG_SITELOCAL 0x0200 412 #define NI_NODEADDR_FLAG_GLOBAL 0x0400 413 #define NI_NODEADDR_FLAG_ALL 0x0800 414 #define NI_NODEADDR_FLAG_TRUNCATE 0x1000 415 #define NI_NODEADDR_FLAG_ANYCAST 0x2000 /* just experimental. not in spec */ 416 #else 417 #error "Byte order not implemented" 418 #endif 419 #else /* draft-ietf-ipngwg-icmp-name-lookups-05 (and later?) */ 420 #if _BYTE_ORDER == _BIG_ENDIAN 421 #define NI_NODEADDR_FLAG_TRUNCATE 0x1 422 #define NI_NODEADDR_FLAG_ALL 0x2 423 #define NI_NODEADDR_FLAG_COMPAT 0x4 424 #define NI_NODEADDR_FLAG_LINKLOCAL 0x8 425 #define NI_NODEADDR_FLAG_SITELOCAL 0x10 426 #define NI_NODEADDR_FLAG_GLOBAL 0x20 427 #define NI_NODEADDR_FLAG_ANYCAST 0x40 /* just experimental. not in spec */ 428 #elif _BYTE_ORDER == _LITTLE_ENDIAN 429 #define NI_NODEADDR_FLAG_TRUNCATE 0x0100 430 #define NI_NODEADDR_FLAG_ALL 0x0200 431 #define NI_NODEADDR_FLAG_COMPAT 0x0400 432 #define NI_NODEADDR_FLAG_LINKLOCAL 0x0800 433 #define NI_NODEADDR_FLAG_SITELOCAL 0x1000 434 #define NI_NODEADDR_FLAG_GLOBAL 0x2000 435 #define NI_NODEADDR_FLAG_ANYCAST 0x4000 /* just experimental. not in spec */ 436 #else 437 #error "Byte order not implemented" 438 #endif 439 #endif 440 441 struct ni_reply_fqdn { 442 u_int32_t ni_fqdn_ttl; /* TTL */ 443 u_int8_t ni_fqdn_namelen; /* length in octets of the FQDN */ 444 u_int8_t ni_fqdn_name[3]; /* XXX: alignment */ 445 } __attribute__((__packed__)); 446 447 /* 448 * Router Renumbering. as router-renum-08.txt 449 */ 450 struct icmp6_router_renum { /* router renumbering header */ 451 struct icmp6_hdr rr_hdr; 452 u_int8_t rr_segnum; 453 u_int8_t rr_flags; 454 u_int16_t rr_maxdelay; 455 u_int32_t rr_reserved; 456 } __attribute__((__packed__)); 457 458 #define ICMP6_RR_FLAGS_TEST 0x80 459 #define ICMP6_RR_FLAGS_REQRESULT 0x40 460 #define ICMP6_RR_FLAGS_FORCEAPPLY 0x20 461 #define ICMP6_RR_FLAGS_SPECSITE 0x10 462 #define ICMP6_RR_FLAGS_PREVDONE 0x08 463 464 #define rr_type rr_hdr.icmp6_type 465 #define rr_code rr_hdr.icmp6_code 466 #define rr_cksum rr_hdr.icmp6_cksum 467 #define rr_seqnum rr_hdr.icmp6_data32[0] 468 469 struct rr_pco_match { /* match prefix part */ 470 u_int8_t rpm_code; 471 u_int8_t rpm_len; 472 u_int8_t rpm_ordinal; 473 u_int8_t rpm_matchlen; 474 u_int8_t rpm_minlen; 475 u_int8_t rpm_maxlen; 476 u_int16_t rpm_reserved; 477 struct in6_addr rpm_prefix; 478 } __attribute__((__packed__)); 479 480 #define RPM_PCO_ADD 1 481 #define RPM_PCO_CHANGE 2 482 #define RPM_PCO_SETGLOBAL 3 483 #define RPM_PCO_MAX 4 484 485 struct rr_pco_use { /* use prefix part */ 486 u_int8_t rpu_uselen; 487 u_int8_t rpu_keeplen; 488 u_int8_t rpu_ramask; 489 u_int8_t rpu_raflags; 490 u_int32_t rpu_vltime; 491 u_int32_t rpu_pltime; 492 u_int32_t rpu_flags; 493 struct in6_addr rpu_prefix; 494 } __attribute__((__packed__)); 495 #define ICMP6_RR_PCOUSE_RAFLAGS_ONLINK 0x80 496 #define ICMP6_RR_PCOUSE_RAFLAGS_AUTO 0x40 497 498 #if _BYTE_ORDER == _BIG_ENDIAN 499 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80000000 500 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40000000 501 #elif _BYTE_ORDER == _LITTLE_ENDIAN 502 #define ICMP6_RR_PCOUSE_FLAGS_DECRVLTIME 0x80 503 #define ICMP6_RR_PCOUSE_FLAGS_DECRPLTIME 0x40 504 #else 505 #error "Byte order not implemented" 506 #endif 507 508 struct rr_result { /* router renumbering result message */ 509 u_int16_t rrr_flags; 510 u_int8_t rrr_ordinal; 511 u_int8_t rrr_matchedlen; 512 u_int32_t rrr_ifid; 513 struct in6_addr rrr_prefix; 514 } __attribute__((__packed__)); 515 #if _BYTE_ORDER == _BIG_ENDIAN 516 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0002 517 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0001 518 #elif _BYTE_ORDER == _LITTLE_ENDIAN 519 #define ICMP6_RR_RESULT_FLAGS_OOB 0x0200 520 #define ICMP6_RR_RESULT_FLAGS_FORBIDDEN 0x0100 521 #else 522 #error "Byte order not implemented" 523 #endif 524 525 /* 526 * icmp6 filter structures. 527 */ 528 529 struct icmp6_filter { 530 u_int32_t icmp6_filt[8]; 531 }; 532 533 #ifdef _KERNEL 534 #define ICMP6_FILTER_SETPASSALL(filterp) \ 535 do { \ 536 int i; u_char *p; \ 537 p = (u_char *)filterp; \ 538 for (i = 0; i < sizeof(struct icmp6_filter); i++) \ 539 p[i] = 0xff; \ 540 } while (0) 541 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 542 bzero(filterp, sizeof(struct icmp6_filter)) 543 #else /* _KERNEL */ 544 #define ICMP6_FILTER_SETPASSALL(filterp) \ 545 memset(filterp, 0xff, sizeof(struct icmp6_filter)) 546 #define ICMP6_FILTER_SETBLOCKALL(filterp) \ 547 memset(filterp, 0x00, sizeof(struct icmp6_filter)) 548 #endif /* _KERNEL */ 549 550 #define ICMP6_FILTER_SETPASS(type, filterp) \ 551 (((filterp)->icmp6_filt[(type) >> 5]) |= (1 << ((type) & 31))) 552 #define ICMP6_FILTER_SETBLOCK(type, filterp) \ 553 (((filterp)->icmp6_filt[(type) >> 5]) &= ~(1 << ((type) & 31))) 554 #define ICMP6_FILTER_WILLPASS(type, filterp) \ 555 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) != 0) 556 #define ICMP6_FILTER_WILLBLOCK(type, filterp) \ 557 ((((filterp)->icmp6_filt[(type) >> 5]) & (1 << ((type) & 31))) == 0) 558 559 /* 560 * Variables related to this implementation 561 * of the internet control message protocol version 6. 562 */ 563 struct icmp6errstat { 564 u_quad_t icp6errs_dst_unreach_noroute; 565 u_quad_t icp6errs_dst_unreach_admin; 566 u_quad_t icp6errs_dst_unreach_beyondscope; 567 u_quad_t icp6errs_dst_unreach_addr; 568 u_quad_t icp6errs_dst_unreach_noport; 569 u_quad_t icp6errs_packet_too_big; 570 u_quad_t icp6errs_time_exceed_transit; 571 u_quad_t icp6errs_time_exceed_reassembly; 572 u_quad_t icp6errs_paramprob_header; 573 u_quad_t icp6errs_paramprob_nextheader; 574 u_quad_t icp6errs_paramprob_option; 575 u_quad_t icp6errs_redirect; /* we regard redirect as an error here */ 576 u_quad_t icp6errs_unknown; 577 }; 578 579 struct icmp6stat { 580 /* statistics related to icmp6 packets generated */ 581 u_quad_t icp6s_error; /* # of calls to icmp6_error */ 582 u_quad_t icp6s_canterror; /* no error 'cuz old was icmp */ 583 u_quad_t icp6s_toofreq; /* no error 'cuz rate limitation */ 584 u_quad_t icp6s_outhist[256]; 585 /* statistics related to input message processed */ 586 u_quad_t icp6s_badcode; /* icmp6_code out of range */ 587 u_quad_t icp6s_tooshort; /* packet < sizeof(struct icmp6_hdr) */ 588 u_quad_t icp6s_checksum; /* bad checksum */ 589 u_quad_t icp6s_badlen; /* calculated bound mismatch */ 590 /* 591 * number of responses: this member is inherited from netinet code, but 592 * for netinet6 code, it is already available in icp6s_outhist[]. 593 */ 594 u_quad_t icp6s_reflect; 595 u_quad_t icp6s_inhist[256]; 596 u_quad_t icp6s_nd_toomanyopt; /* too many ND options */ 597 struct icmp6errstat icp6s_outerrhist; 598 #define icp6s_odst_unreach_noroute \ 599 icp6s_outerrhist.icp6errs_dst_unreach_noroute 600 #define icp6s_odst_unreach_admin icp6s_outerrhist.icp6errs_dst_unreach_admin 601 #define icp6s_odst_unreach_beyondscope \ 602 icp6s_outerrhist.icp6errs_dst_unreach_beyondscope 603 #define icp6s_odst_unreach_addr icp6s_outerrhist.icp6errs_dst_unreach_addr 604 #define icp6s_odst_unreach_noport icp6s_outerrhist.icp6errs_dst_unreach_noport 605 #define icp6s_opacket_too_big icp6s_outerrhist.icp6errs_packet_too_big 606 #define icp6s_otime_exceed_transit \ 607 icp6s_outerrhist.icp6errs_time_exceed_transit 608 #define icp6s_otime_exceed_reassembly \ 609 icp6s_outerrhist.icp6errs_time_exceed_reassembly 610 #define icp6s_oparamprob_header icp6s_outerrhist.icp6errs_paramprob_header 611 #define icp6s_oparamprob_nextheader \ 612 icp6s_outerrhist.icp6errs_paramprob_nextheader 613 #define icp6s_oparamprob_option icp6s_outerrhist.icp6errs_paramprob_option 614 #define icp6s_oredirect icp6s_outerrhist.icp6errs_redirect 615 #define icp6s_ounknown icp6s_outerrhist.icp6errs_unknown 616 u_quad_t icp6s_pmtuchg; /* path MTU changes */ 617 u_quad_t icp6s_nd_badopt; /* bad ND options */ 618 u_quad_t icp6s_badns; /* bad neighbor solicitation */ 619 u_quad_t icp6s_badna; /* bad neighbor advertisement */ 620 u_quad_t icp6s_badrs; /* bad router advertisement */ 621 u_quad_t icp6s_badra; /* bad router advertisement */ 622 u_quad_t icp6s_badredirect; /* bad redirect message */ 623 }; 624 625 /* 626 * Names for ICMP sysctl objects 627 */ 628 #define ICMPV6CTL_STATS 1 629 #define ICMPV6CTL_REDIRACCEPT 2 /* accept/process redirects */ 630 #define ICMPV6CTL_REDIRTIMEOUT 3 /* redirect cache time */ 631 #if 0 /*obsoleted*/ 632 #define ICMPV6CTL_ERRRATELIMIT 5 /* ICMPv6 error rate limitation */ 633 #endif 634 #define ICMPV6CTL_ND6_PRUNE 6 635 #define ICMPV6CTL_ND6_DELAY 8 636 #define ICMPV6CTL_ND6_UMAXTRIES 9 637 #define ICMPV6CTL_ND6_MMAXTRIES 10 638 #define ICMPV6CTL_ND6_USELOOPBACK 11 639 /*#define ICMPV6CTL_ND6_PROXYALL 12 obsoleted, do not reuse here */ 640 #define ICMPV6CTL_NODEINFO 13 641 #define ICMPV6CTL_ERRPPSLIMIT 14 /* ICMPv6 error pps limitation */ 642 #define ICMPV6CTL_ND6_MAXNUDHINT 15 643 #define ICMPV6CTL_MTUDISC_HIWAT 16 644 #define ICMPV6CTL_MTUDISC_LOWAT 17 645 #define ICMPV6CTL_ND6_DEBUG 18 646 #define ICMPV6CTL_ND6_DRLIST 19 647 #define ICMPV6CTL_ND6_PRLIST 20 648 #define ICMPV6CTL_MAXID 21 649 650 #define ICMPV6CTL_NAMES { \ 651 { 0, 0 }, \ 652 { 0, 0 }, \ 653 { "rediraccept", CTLTYPE_INT }, \ 654 { "redirtimeout", CTLTYPE_INT }, \ 655 { 0, 0 }, \ 656 { 0, 0 }, \ 657 { "nd6_prune", CTLTYPE_INT }, \ 658 { 0, 0 }, \ 659 { "nd6_delay", CTLTYPE_INT }, \ 660 { "nd6_umaxtries", CTLTYPE_INT }, \ 661 { "nd6_mmaxtries", CTLTYPE_INT }, \ 662 { "nd6_useloopback", CTLTYPE_INT }, \ 663 { 0, 0 }, \ 664 { "nodeinfo", CTLTYPE_INT }, \ 665 { "errppslimit", CTLTYPE_INT }, \ 666 { "nd6_maxnudhint", CTLTYPE_INT }, \ 667 { "mtudisc_hiwat", CTLTYPE_INT }, \ 668 { "mtudisc_lowat", CTLTYPE_INT }, \ 669 { "nd6_debug", CTLTYPE_INT }, \ 670 { 0, 0 }, \ 671 { 0, 0 }, \ 672 } 673 674 #define RTF_PROBEMTU RTF_PROTO1 675 676 #ifdef _KERNEL 677 # ifdef __STDC__ 678 struct rtentry; 679 struct rttimer; 680 struct in6_multi; 681 # endif 682 void icmp6_init (void); 683 void icmp6_paramerror (struct mbuf *, int); 684 void icmp6_error (struct mbuf *, int, int, int); 685 int icmp6_input (struct mbuf **, int *, int); 686 void icmp6_fasttimo (void); 687 void icmp6_reflect (struct mbuf *, size_t); 688 void icmp6_prepare (struct mbuf *); 689 void icmp6_redirect_input (struct mbuf *, int); 690 void icmp6_redirect_output (struct mbuf *, struct rtentry *); 691 692 struct ip6ctlparam; 693 void icmp6_mtudisc_update (struct ip6ctlparam *, int); 694 695 /* XXX: is this the right place for these macros? */ 696 #define icmp6_ifstat_inc(ifp, tag) \ 697 do { \ 698 if (ifp) \ 699 ((struct in6_ifextra *)((ifp)->if_afdata[AF_INET6]))->icmp6_ifstat->tag++; \ 700 } while (0) 701 702 #define icmp6_ifoutstat_inc(ifp, type, code) \ 703 do { \ 704 icmp6_ifstat_inc(ifp, ifs6_out_msg); \ 705 if (type < ICMP6_INFOMSG_MASK) \ 706 icmp6_ifstat_inc(ifp, ifs6_out_error); \ 707 switch (type) { \ 708 case ICMP6_DST_UNREACH: \ 709 icmp6_ifstat_inc(ifp, ifs6_out_dstunreach); \ 710 if (code == ICMP6_DST_UNREACH_ADMIN) \ 711 icmp6_ifstat_inc(ifp, ifs6_out_adminprohib); \ 712 break; \ 713 case ICMP6_PACKET_TOO_BIG: \ 714 icmp6_ifstat_inc(ifp, ifs6_out_pkttoobig); \ 715 break; \ 716 case ICMP6_TIME_EXCEEDED: \ 717 icmp6_ifstat_inc(ifp, ifs6_out_timeexceed); \ 718 break; \ 719 case ICMP6_PARAM_PROB: \ 720 icmp6_ifstat_inc(ifp, ifs6_out_paramprob); \ 721 break; \ 722 case ICMP6_ECHO_REQUEST: \ 723 icmp6_ifstat_inc(ifp, ifs6_out_echo); \ 724 break; \ 725 case ICMP6_ECHO_REPLY: \ 726 icmp6_ifstat_inc(ifp, ifs6_out_echoreply); \ 727 break; \ 728 case MLD_LISTENER_QUERY: \ 729 icmp6_ifstat_inc(ifp, ifs6_out_mldquery); \ 730 break; \ 731 case MLD_LISTENER_REPORT: \ 732 icmp6_ifstat_inc(ifp, ifs6_out_mldreport); \ 733 break; \ 734 case MLD_LISTENER_DONE: \ 735 icmp6_ifstat_inc(ifp, ifs6_out_mlddone); \ 736 break; \ 737 case ND_ROUTER_SOLICIT: \ 738 icmp6_ifstat_inc(ifp, ifs6_out_routersolicit); \ 739 break; \ 740 case ND_ROUTER_ADVERT: \ 741 icmp6_ifstat_inc(ifp, ifs6_out_routeradvert); \ 742 break; \ 743 case ND_NEIGHBOR_SOLICIT: \ 744 icmp6_ifstat_inc(ifp, ifs6_out_neighborsolicit); \ 745 break; \ 746 case ND_NEIGHBOR_ADVERT: \ 747 icmp6_ifstat_inc(ifp, ifs6_out_neighboradvert); \ 748 break; \ 749 case ND_REDIRECT: \ 750 icmp6_ifstat_inc(ifp, ifs6_out_redirect); \ 751 break; \ 752 } \ 753 } while (0) 754 755 extern int icmp6_rediraccept; /* accept/process redirects */ 756 extern int icmp6_redirtimeout; /* cache time for redirect routes */ 757 #endif /* _KERNEL */ 758 759 #endif /* not _NETINET_ICMP6_H_ */ 760